Image speak - A lot of bloggers tend to ignore this, but the images on your blog speak a lot for what you write. Use good quality images and make sure they express your written stuff in utmost simplicity yet precision.
Blogging is as much about bold ideas as it is about creative expressions, Work on your language and dive into ideas fearlessly.
Make your posts visually appealing. It really helps in grasping the attention of the reader and adds value to the post.